Print PDF
Favorite
Email
Step 9Seal it off
The final step is to make the valve air tight. To do this, you'll need a very small O-Ring.
Now you can see why the head of the screw needed to be larger than the shaft. The head of the screw stops the O-Ring from slipping off.
And with that, the XRV is complete!
The spring is always holding the valve closed so air will not escape.
You can test this with your mouth. Seal your lips around the housing of the valve and blow.. build up a little air pressure in your cheeks then pull the washer/nut backwards (don't push it down your throat!) The air should escape through the tube.
Note: if air is leaking through the valve, then it could be that your O-Ring isn't sealing it too well. Try adding a second O-Ring.
Now you can see why the head of the screw needed to be larger than the shaft. The head of the screw stops the O-Ring from slipping off.
And with that, the XRV is complete!
The spring is always holding the valve closed so air will not escape.
You can test this with your mouth. Seal your lips around the housing of the valve and blow.. build up a little air pressure in your cheeks then pull the washer/nut backwards (don't push it down your throat!) The air should escape through the tube.
Note: if air is leaking through the valve, then it could be that your O-Ring isn't sealing it too well. Try adding a second O-Ring.
| « Previous Step | Download PDFView All Steps | Next Step » |
1
comment
|
Add Comment
|
1
Oct 17, 2008. 11:41 PMwolfy_9005
says:
I'd say add 2, just incase. That way if 1 fails, you have a sort of safety net, incase your accidentally pointing it at someone/something you dont want to hit.(which always happens when you dont want it to...)
Reply
 |
Add Comment
|
